package generics;//: generics/UnboundedWildcards2.java
import java.util.*;

public class UnboundedWildcards2 {
      static Map map1;
      static Map<?,?> map2;
      static Map<String,?> map3;
      static void assign1(Map map) { map1 = map; }
      static void assign2(Map<?,?> map) { map2 = map; }
      static void assign3(Map<String,?> map) { map3 = map; }
      public static void main(String[] args) {
            assign1(new HashMap());
            assign2(new HashMap());
            // assign3(new HashMap()); // Warning:
            // Unchecked conversion. Found: HashMap
            // Required: Map<String,?>
            assign1(new HashMap<String,Integer>());
            assign2(new HashMap<String,Integer>());
            assign3(new HashMap<String,Integer>());
      }
} ///:~
